Large-Scale Epithermal Gold-Silver System with Porphyry Potential in Central British Columbia
EXECUTIVE SUMMARY
Copley is a drill-permitted, road-accessible gold-silver project located within the porphyry-epithermal endowed Nechako Plateau region of central British Columbia. Hosted in felsic volcanic vent complexes within a 10x10 km interpreted caldera, the project represents a large-tonnage, intermediate-sulfidation epithermal system with potential for high-grade structurally focused mineralization and associated porphyry roots.
Recent and historic work has confirmed the presence of widespread alteration, elevated pathfinder elements, and multiple high-grade gold intercepts from shallow drilling. With close proximity to infrastructure and supportive, resource-oriented communities and First Nations, Copley presents a compelling acquisition or partnership opportunity.
PROJECT HIGHLIGHTS
- Geological Setting: Hosted within altered felsic volcanic units (Late Jurassic/Early Cretaceous) on a low magnetic susceptibility feature interpreted as a 10x10 km caldera.
- Mineralization Style: Intermediate-sulfidation epithermal Au-Ag with porphyry-style alteration and mineral associations.
- Drill Highlights:
- 10.97 m @ 1.03% Cu, 0.15 g/t Au (COP-23-0001)
- 2.0 m @ 158 g/t Ag (COP-23-0004)
- 0.97 m @ 1.05% Cu, 0.12 g/t Au, 843 ppm Mo (COP-24-0010)
- 4.5 m @ 0.69 g/t Au (COP-23-0002)
- Historic intercepts (2011):
- 2.0 m @ 9.27 g/t Au (C4-02)
- 10.67 m @ 1.507 g/t Au incl. 3.67 m @ 2.573 g/t Au (C6-01)
- 1.87 m @ 2.657 g/t Au (C6-02)
- 2.0 m @ 1.991 g/t Au (C6-03)
- Rock Sample Highlights:
- Channel samples up to 17 g/t Au (Smoking Pipe)
- Composite grabs up to 14 g/t Au (Smoking Pipe)
- Up to 6.2 g/t Au (East Dome), 3.3 g/t Au (Mid Dome), and 757 ppb Au (45 Road Zone)
LOCATION & ACCESS
- 55 km southwest of Vanderhoof, BC, and 35 km south of Fraser Lake
- Year-round road access via forestry roads
- Within 10 km of the proposed Blackwater transmission line
- Nearby infrastructure includes Highway 16, a 500 kV transmission line, and regional rail and pipeline corridors
- Proximity to mining-friendly communities and engaged First Nations with strong history of resource development partnerships
GEOLOGICAL MODEL & TARGETS
- Multiple NE and NW-trending structures intersect magnetic lows and altered rhyolite domes
- Gold mineralization hosted in altered vent facies (lithic tuffs, rhyolite domes, diatremes)
- Extensive zones of QSP alteration (quartz-sericite-pyrite) over 7.5 x 1.5 km area
- Pathfinder suite includes Mo, Sb, As, Hg, Pb, Zn — consistent with epithermal signatures
- Propylitic alteration and copper-bearing zones at the margins suggest porphyry vectoring
- Potential bulk tonnage open ended target in drilling at Smoking Pipe
- Porphyry & Epithermal System Potential
- Deep IP anomalies and resistivity anomalies suggest buried intrusive centers
- Rhyolite domes, chalcedonic veining and anomalous gold rock chip samples support epithermal mineralization model
- Limited Drilling – Many anomalies and extensions of known mineralized zones remain untested or underexplored. Copper and Gold zones intersected in drilling to date
- Large Underexplored Land Package – multiple mineralized zones and geophysical anomalies ready for follow up
- Exploration by Optionor concluded Cu_Au porphyry potential – October 2023 Centerra stakes additional 1453 hectares in contiguous claims based upon findings
DATA ASSETS & TECHNICAL DATABASE
- Copley benefits from a robust technical database, including legacy and modern exploration data compiled over multiple campaigns.
- A comprehensive dataset was recently received from a former option partner, including detailed geochemical, geophysical, and drill data.
- The data package includes over 850 drill core samples, 93 QA/QC samples, extensive trenching results, IP/resistivity data, soil and rock geochemistry, and structural interpretations.
- This large and well-organized dataset provides a strong foundation for immediate follow-up work and 3D targeting.
EXPLORATION HISTORY & POTENTIAL
- Early work (1980s): Mapping, soil and rock sampling, limited hand trenching
- 2010–2011: Kootenay Silver drilled 23 holes (~2,200 m), defining shallow epithermal zone at Smoking Pipe with multiple high-grade gold intercepts
- 2022: Centerra IP, (29 line km), Drone Magnetics (358 line km), Soil Sampling, (1,342 samples) Identifies coherent 2km long gold-in-soil anomaly extending northwest from Smoking Pipe prospect
- 2023–24: Follow-up IP (9.3 line km) diamond drilling, 12 holes (4,181 m) tested deeper targets and confirmed new Cu-Au-Ag zones
- $2.96M in total exploration expenditure filed by optionor Centerra Gold 2022 to 2024
- Numerous targets remain untested — particularly at East Dome, Mid Dome, and 45 Road Zone
REGIONAL CONTEXT
- Located in a proven belt with several major deposits:
- Blackwater: 8 Moz Au, 60 Moz Ag
- Equity Silver: 71 Moz Ag, 0.5 Moz Au
- Huckleberry: 0.8 Mt Cu
- Capoose, Endako, Bell Copper, Granisle, 3Ts
OWNERSHIP & NEXT STEPS
- 100% owned by Kootenay Resources Inc.
- Permits pending for immediate follow-up drilling
- Strong potential for high-grade Au-Ag discoveries along underexplored structures
- Strong potential for Cu-Au porphyry discovery
- Assessement work requirement good for 10 years